How to properly maintain the Thermostat Housing on a 4.0L SOHC engine in a Ford Mustang?

The first step to work on a 4.0L SOHC engine thermostat housing requires complete cooling system drainage. Disconnect both the air cleaner outlet pipe as well as the throttle body for service. The technician must disconnect the engine coolant temperature (ECT) sensor electrical connector followed by removal of the upper radiator hose and heater inlet hose and bypass hose from the thermostat housing. Move these components to the side. The three lower bolts securing the thermostat housing should be removed for housing replacement while installation requires tightening to 12 Nm (9 lb-ft). To complete the service conclude the procedure by filling the cooling system and bleaching it properly.

OEM Ford Mustang Thermostat Housing

Engine Coolant Thermostat Housing

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24 Thermostat Housings found

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Ford Mustang Thermostat Housing, Lower
Part Number: GL2Z-8592-A
$42.37 MSRP: $61.67
You Save: $19.30 (32%)
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Lower; Thermostat Housing Cover; Lower Housing
- Position: Lower
- Replaces: 1L2Z-8592-BB, RH-148, RH-93
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | Base | 6 Cyl 4.0 L GAS
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Ford Mustang Thermostat Housing
Part Number: BR3Z-8A586-N
$161.17 MSRP: $255.93
You Save: $94.76 (38%)
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Kit; Thermostat Housing Cover; Thermostat Unit
- Replaces: BR3Z-8A586-K, BR3Z-8A586-L, BR3Z-8A586-M, BR3Z-8592-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2024 Ford Mustang | Boss 302, Bullitt, Dark Horse, Dark Horse Premium, GT, GT 50 Years Limited Edition, GT Premium, Mach 1, Shelby GT350, Shelby GT350R, Shelby GT500 | 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS
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Ford Mustang Water Outlet
Part Number: FR3Z-8592-A
$36.12 MSRP: $51.67
You Save: $15.55 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Outlet Flange; Thermostat Housing; Radiator Hose; Connector Pipe; Connection - Water Outlet
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2024 Ford Mustang | Bullitt, Dark Horse, Dark Horse Premium, GT, GT 50 Years Limited Edition, GT Premium, Mach 1, Shelby GT350, Shelby GT350R, Shelby GT500 | 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS
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Ford Mustang Thermostat Housing, Upper
Part Number: 5R3Z-8592-BA
$40.29 MSRP: $58.65
You Save: $18.36 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Upper; Engine Coolant Water Outlet; Thermostat Housing Cover; Water Outlet; Connection - Water Outlet
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2010 Ford Mustang | Base | 6 Cyl 4.0 L GAS
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Ford Mustang Thermostat Housing
Part Number: FOZZ-8592-B
$123.76 MSRP: $186.67
You Save: $62.91 (34%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing; Thermostat Housing Cover; Connection - Water Outlet; Water Outlet
- Replaces: FOZZ-8592-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1994-1995 Ford Mustang | GT, GTS, SVT Cobra | 8 Cyl 5.0 L GAS
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Ford Mustang Water Outlet
Part Number: BR3Z-8592-P
$35.50 MSRP: $51.67
You Save: $16.17 (32%)
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Outlet Flange; Engine Coolant Water Outlet; Radiator Hose
- Replaces: BR3Z-8592-C, RH-197
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2014 Ford Mustang | Boss 302, GT | 8 Cyl 5.0 L GAS
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Ford Mustang Thermostat Housing
Part Number: F6ZZ-8592-BA
$48.93 MSRP: $70.00
You Save: $21.07 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Connection Water Outlet; Thermostat Housing Cover; Connector; Connection - Water Outlet
- Replaced by: F6ZZ-8592-BB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2004, 1996-2001 Ford Mustang | GT, GT Bullitt, Mach 1, SVT Cobra, SVT Cobra 10th Anniversary | 8 Cyl 4.6 L GAS
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Ford Mustang Thermostat Housing
Part Number: BL3Z-8A586-G
$148.32 MSRP: $215.90
You Save: $67.58 (32%)
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Kit; Thermostat Housing Cover; Thermostat Unit
- Replaces: BL3Z-8592-C, RH-211, BL3Z-8A586-B, BR3Z-8592-B, RH-244
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2017 Ford Mustang | Base, V6 | 6 Cyl 3.7 L GAS
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Ford Mustang Water Outlet, Upper
Part Number: BR3Z-8592-Q
$129.85 MSRP: $199.83
You Save: $69.98 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing & Cover; Upper Inlet Flange.; Thermostat Outlet; Outlet Tube; Connection - Water Outlet; Thermostat Housing
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2015-2017 Ford Mustang | V6 | 6 Cyl 3.7 L GAS
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Ford Mustang Thermostat Housing
Part Number: FOZZ-8592-A
$123.76 MSRP: $186.67
You Save: $62.91 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Connection - Water Outlet; Thermostat Housing Cover
- Manufacturer Note: CONNECTOR
- Replaced by: FOZZ-8592-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1984-1990 Ford Mustang | GT, GT-350 20th Anniversary, L, LX | 8 Cyl 5.0 L GAS
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Ford Mustang Thermostat Housing, Front
Part Number: KR3Z-8592-B
$245.16 MSRP: $360.00
You Save: $114.84 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Front, Lower; Water Manifold; Water Outlet; Water Inlet
- Position: Front
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | Shelby GT500 | 8 Cyl 5.2 L GAS
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Ford Mustang Thermostat Housing, Upper
Part Number: KR3Z-8592-A
$213.49 MSRP: $313.50
You Save: $100.01 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Connection - Water Inlet; Engine Coolant Thermostat Housing, Upper; Thermostat Housing Cover; Water Inlet; Inlet Pipe
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | Shelby GT500 | 8 Cyl 5.2 L GAS
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Ford Mustang Thermostat Housing, Upper
Part Number: 7R3Z-8592-A
$25.85 MSRP: $36.67
You Save: $10.82 (30%)
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Upper; Engine Coolant Water Outlet; Thermostat Housing Cover; Water Outlet; Thermostat Outlet; Upper Housing; Connection - Water Outlet
- Position: Upper
- Replaces: 6L2Z-8592-DA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2010 Ford Mustang | Bullitt, GT, Shelby GT | 8 Cyl 4.6 L GAS
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Ford Mustang Thermostat Housing, Lower
Part Number: 4R3Z-8592-AA
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Lower; Thermostat Housing Cover; Connection - Water Outlet
- Position: Lower
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Ford Mustang | GT | 8 Cyl 4.6 L GAS
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Ford Mustang Thermostat Housing, Lower
Part Number: 7R3Z-8592-D
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Lower; Thermostat Housing Cover; Lower Housing; Connection - Water Outlet
- Position: Lower
- Replaces: RH-173, 7R3Z-8592-C
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2014 Ford Mustang | Shelby GT500, Shelby GT500KR | 8 Cyl 5.4 L GAS, 8 Cyl 5.8 L GAS
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Ford Mustang Water Outlet
Part Number: AR3Z-8A586-B
Product Specifications
- Other Name: Connection Water Outlet; Thermostat Unit; Connection - Water Outlet
- Replaces: 7R3Z-8A586-C, 8R3Z-8A586-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2012 Ford Mustang | Shelby GT500, Shelby GT500KR | 8 Cyl 5.4 L GAS
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Ford Mustang Thermostat Housing
Part Number: DR3Z-8592-A
Product Specifications
- Other Name: Connection Water Outlet; Thermostat Housing Cover; Connection - Water Outlet
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2014 Ford Mustang | Shelby GT500 | 8 Cyl 5.8 L GAS
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Ford Mustang Thermostat Housing
Part Number: F6ZZ-8592-C
Product Specifications
- Other Name: Connection - Water Outlet; Engine Coolant Thermostat Housing Cover; Thermostat Housing Cover; Outlet Assembly; Water Outlet
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-2004 Ford Mustang | GT, GT Bullitt | 8 Cyl 4.6 L GAS
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Ford Mustang Thermostat Housing
Part Number: XR3Z-8592-AA
Product Specifications
- Other Name: Connection - Water Outlet; Engine Coolant Thermostat Housing; Thermostat Housing Cover
- Manufacturer Note: CONNECTOR
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2004 Ford Mustang | Base | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS
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Ford Mustang Thermostat Housing, Upper
Part Number: 7R3Z-8592-B
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Upper; Thermostat Housing Cover; Thermostat Cover; Water Outlet; Upper Housing; Connection - Water Outlet
- Position: Upper
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2014 Ford Mustang | Shelby GT500, Shelby GT500KR | 8 Cyl 5.4 L GAS, 8 Cyl 5.8 L GAS

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Ford Mustang Thermostat Housing

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Ford Mustang Thermostat Housing Parts Questions & Experts Answers

Thermostat Housing, Upper
5R3Z-8592-BA
Q: How to properly maintain the Thermostat Housing on a 4.0L SOHC engine in a Ford Mustang?
A: The first step to work on a 4.0L SOHC engine thermostat housing requires complete cooling system drainage. Disconnect both the air cleaner outlet pipe as well as the Throttle Body for service. The technician must disconnect the engine coolant temperature (ECT) sensor electrical connector followed by removal of the upper radiator hose and heater inlet hose and bypass hose from the thermostat housing. Move these components to the side. The three lower bolts securing the thermostat housing should be removed for housing replacement while installation requires tightening to 12 Nm (9 lb-ft). To complete the service conclude the procedure by filling the cooling system and bleaching it properly.